"I just bought a 1988 Trojan m
"I just bought a 1988 Trojan mid cabin a few weeks ago, twin 454's FWC. I've been going through the boat, fixing a bunch of stuff and putting together my winter list.
Over the weekend, I was working on the throttle cables and removed the two bolts that hold the cable bracket to the top of the intake manifold. I noticed that one of the bolt holes had coolant inside the hole. I did the same thing on the other engine, both were dry.
I thought that didn't seem right but buttoned everything up and took it for a test run. Over 2,500 rpms's it starts to stutter and sounds like it's misfiring.
I "think" it might also be throwing more steam out of the exhaust but running around 180F. Both engines steamed during the sea trial but never went past 180. I'm planning on doing elbows/risers and raw water pumps when it comes out in a couple of weeks.
Below 2,500 it ran fine.
It also did this last week when I took it out. It was a total coincidence that I was working on the throttle cable and removed the mounting bolts and saw what I did.
Yesterday, I noticed that a couple of the plugs wires were loose including the coil wire. I re-seated them, started it, and after warm-up, idled it past 2,500 at the dock and it sounded great. Not sure how it would be under load though.
I checked the oil and it looks fine.
I guess my question is, does the fact that I see coolant inside the bolt hole mean I have a problem? If so, would that be the intake manifold gasket?
thanks,
Bob"
"I just bought a 1988 Trojan mid cabin a few weeks ago, twin 454's FWC. I've been going through the boat, fixing a bunch of stuff and putting together my winter list.
Over the weekend, I was working on the throttle cables and removed the two bolts that hold the cable bracket to the top of the intake manifold. I noticed that one of the bolt holes had coolant inside the hole. I did the same thing on the other engine, both were dry.
I thought that didn't seem right but buttoned everything up and took it for a test run. Over 2,500 rpms's it starts to stutter and sounds like it's misfiring.
I "think" it might also be throwing more steam out of the exhaust but running around 180F. Both engines steamed during the sea trial but never went past 180. I'm planning on doing elbows/risers and raw water pumps when it comes out in a couple of weeks.
Below 2,500 it ran fine.
It also did this last week when I took it out. It was a total coincidence that I was working on the throttle cable and removed the mounting bolts and saw what I did.
Yesterday, I noticed that a couple of the plugs wires were loose including the coil wire. I re-seated them, started it, and after warm-up, idled it past 2,500 at the dock and it sounded great. Not sure how it would be under load though.
I checked the oil and it looks fine.
I guess my question is, does the fact that I see coolant inside the bolt hole mean I have a problem? If so, would that be the intake manifold gasket?
thanks,
Bob"